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描述
TYPICALAPPLICATION
Vin
2.5 v 至 6.0 v
R2
R1
*cs 是 一个 可选 软启动 电容器
L1
4.7 h
µ
C1
1 f
µ
C2
4.7 f
µ
vo
20 v/100 ma
C3
cs *
Vin
PGND
l
软件
出点
fb
ss
en
fsw
地
TPS61080
TPS61081
SLVS644A–FEBRUARY2006–REVISEDMARCH2006
highvoltagedc/dcboostconverter
with0.5-一个/1.2-aintegratedswitch
•
Upto85%Efficiency
•
2.5-vto6-vinputvoltagerange
•
10-pin3
×
3mmQFNPackage
•
upto27-voutputvoltage
•
0.5-一个/1.2-aintegratedswitch
•
LCDBiasSupply
•
1.2-mhz/600-khzselectablefixedswitching
•
OLEDPowerSupply
频率
•
WhiteLEDBacklight
•
已建成-inpowerdiode
•
WhiteLEDFlashLight
•
InputtoOutputIsolation
•
xDSLApplications
•
短-电路保护
•
3.3-v/5-vto12-vconversion
•
ProgrammableSoftStart
•
OvervoltageProtection
thetps61080/1isa1.2-mhz/600-khzfixedfrequencyboostconverterdesignedforportabledevices.theic
integratesapowerpwmswitch,输入/outputisolationswitch,andpowerdiode.theresultisahighlyintegrated
solutionwiththeleastnumberofexternalcomponents.theinputcansupportasingleli-ionbatteryand
regulated5v,suchasusboutput.theoutputcanbeboostedupto27v;suitablefordrivingupto7white
leds,aswellasprovidesupplyvoltagetolcdbias,oledand12-vline.tps61080/1providescomprehensive
protectionforhighlyreliablyoperation.theiccansurviveandprotectexternalcomponentsfromashortonany
singlepin,exceptforthevinpin.theintegratedisolationmosfetturnsoffwhentheinductor,powermosfet,
oroutputisshortedtoground.italsoisolatestheoutputfromtheinputduringshutdowntopreventanyleakage
电流.otherprovisionforprotectionincludes0.5-一个/1.2-apeak-至-peakovercurrentprotection,可编程
软启动(ss),overvoltageprotection(ovp),thermalshutdownandundervoltagelockout(uvlo).
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTPREVIEWinformationconcernsproductsinthe
copyright©2006,texasinstrumentsincorporated
形成或设计发展阶段.characteristicdataand
其他规范设计目标.texasinstrumentsreserves
可能会改变或中断一些产品，但没有通知.
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